Book binding machine



FIG. 1 is a right side view of the book binding machine;

FIG. 2 is a top view of the book binding machine;

FIG. 3 is a rear view of the book binding machine;

FIG. 4 is a bottom view of the book binding machine;

FIG. 5 is a left rear perspective view of the book binding machine;

FIG. 6 is a right front perspective view of the book binding machine;

FIG. 7 is a right rear perspective view of the book binding machine where a blade guard is shown in a bottom facing position; and,

FIG. 8 is a left front perspective view of the book binding machine where the blade guard is shown in a front facing position.

The broken lines shown in the views are included for the purpose of illustrating portions of the bookbinding machine that form no part of the claimed design. 

CLAIM I claim the ornamental design for the book binding machine, as shown and described. 